claussen



(No Model.) 2 Sheets-Sheet 1.

E. E. GLAUSSEN. PROCESS OF MAKING PAP-BR BAGS.-

No. 520,951. Patented June 5, 1894.

Invenlor (No Model.) 2 SheetsShet.2. E. E. OLAUSSEN.

PROCESS OF MAKING PAP/ER BAGSL No. 520,951. Patented June 5, 1894.

Fig.1?

Witnesses Inventar:

NITED STATES PATENT OFFICE.

EDWARD E. CLAUssEn, OF HARTFORD, CONNECTICUT, ASSIGNOR. TO ALBERT H.WALKER, TRUsTEE, OF SAME PLACE.

PROCESS OF MAKING PAPER BAGS.

.SPECIFICATION forming part of Letters Patent No. 520,951, dated June 5,1894.

Application filed August 18, 1892. Serial No. 443,362. (No specimens.)

and described in Reissued Letters Patent No.

- 10,083 of April 11, 1882.

Figures 1, 2 and 3 of the drawings are aside, a plan and an end viewrespectively of a length of tubing adapted to be employed in my process,Figs. 4, 5 and 6 are a side, a plan and an end view respectively of theblank of Figs. 1, 2 and 3, showing that blank partially folded. Figs. 7,8 and 9 are corresponding views, showing the blank at a later stage inthe folding operation; and Figs. 10, 11 and 12 are also correspondingviews showing the lower part of the blank folded into a box like form,while the upper portion is folded into the form of an ordinary bellowssided tube. Figs. 13 and 14 are an edge and an end view respectively ofthe blank of Figs. 10, 11 and 12 after the box like form of the blankhas been Converted into the diamond form. Figs. 15 and 16 are viewscorresponding to those of Figs. 13 and 14 after the end flaps of thediamond have been folded over. Fig. 17 is an edge view of the blank ofFigs. 15 and 16 showing the bottom turned down upon the body of theblank. Fig. 18 is aperspective view showing the opened bag.

The following is a description of my new process:

A sheet of paper is folded intoa tubular blank B, having a longitudinalseam 1. The form of that blank is best seen in Fig. 3, wherein it isshown to consist of the upper and lower walls 3 and 4 and of the sidewalls e, f, g and h, the wall 9 being folded against the wall 3 whilethe wall a is folded upon the wall 4. The position and relation of thesewalls are such that the blank of Fig. 3 would be converted into the formof the well known tucked paper tube'by carrying the wall 3 downward andtoward the left, bending the paper at the intersection of the walls e,f, 3,

and g, h, 4, as upon hingesg the wallsf and 9 would then lie upon andcoincide with the walls 6 and h respectively, thus forming the bellowssides of the well known tucked paper tube. That blank may be formed overa rectangular block provided with plates which extend on opposite sidesof that block in the form suggested by Fig. 3. A transverse line ab isnext established around the blank, having a sufficient length between itand the bottom end 2 of the blank to form the bottom of a bag. Upon theupper wall 3 of the blank, and at a distance from the line ab equal tothe width of one of the side walls 9 or h, are established the points 5and 6, while similar points 7 and 8 are established at like distances onthe lower wall of the blank. The line a-b and the points 5, 6, 7 and 8have reference to the location of the lines on which the blank issubsequently folded. 1

The operation of folding the above described blank into a bag is asfollows: The bottom end of the upper wall 3 is folded upward on the linea-b from 9 to 10, while the corresponding part of the lower wall 4 isfolded downward on the line ab from 11 to 12. At the same time the upperwall 3 is carried to the left and downward, as viewed in Figs. 6 and 9,the blank turning upon the junctionlines of the walls c, f, and 3, andof the walls 9, h and 4, as upon hinges. The effect of the bending apartof the walls 3 and 4 on the line ab, is to open the bottom end of theblank below that line into a box like form, while the effect of thesidewise folding down of the upper wall and of the side walls, is tofold that portion of the blank lying above the line a-b into the wellknown form of a tucked or bellows sided tube, and at the same timeserving to bring the box into rectangular form. The above describedcombined operation is continued until the walls f, h, g and 3 are foldeddown upon the walls 6, 4, h and f respectively, thus flattening the topend of the tube; at which time those portions of the walls 3 and 4 whichare between the line a-'-b and the points 5 and 6, and 7 and 8respectively, are brought into a position sub stantially at right anglesto the flattened upper portion of the blank as shown in Figs. 10,

11 and 12. Meanwhile those portions of the walls 3, 4, e, f, g and hwhich are between the end 2 of the blank and the points 5, 6, 7 and Sare expanded into the form of a rectangular box 17. The well knowntriangular folds incident to the conversion of the end of a bellowssided tube into a rectangular box like form, are shown at 15 and 16 inFigs. 9 and 12. These triangular folds are formed during the foldingoperation just described, from those portions of the side walls e, f, gand h which lie between the points 5, 6, 7 and 8 and the points wherethe bottom of the tucks 18 and 19 intersect the line a-b. The box likeform 17 of the blank of Figs. 10, 11 and 12 is next folded into thediamond shaped form 20 of Figs. 13 and 14 by turning the side walls 21and 22 of the box down upon the triangular folds 15 and 16. Paste isthen applied upon the diamond as at 27, the flap 25 is folded over uponthe body of the blank, and the bag is completed by folding over the flap2G. The folded bottom may then be turned down upon the tube portion ofthe blank as shown in Fig. 17 for greater conven- 2 5 sists in firstforming a tubular blank having the walls 3, 4, e, f, g, and h, then infolding one end of that blank into an angular box like form while theother end is folded into the form of abellows sided tube, thencollapsing the box into the diamond form by fold- 5 ing down twoopposite walls of that box upon the blank, and completing the bag bycross folding the flaps of the diamond, substantially as described.

EDWARD E. CLAUSSEN.

Witnesses:

W. J. BELCIIER, W. H. I-lomss.

